RT Journal Article SR Electronic T1 HOW MANY PATIENTS? JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 627 OP 630 VO 27 IS 183 A1 G. H. Curtis Jenkins YR 1977 UL http://bjgp.org/content/27/183/627.2.abstract AB